Machine



B.G.VANDUZEN. MACHINE FOR HBADING BOLTS, RIYBTS, &c.

No. 23,328. Patented Mar. 22, 1859.

UNITED STATES PATENT oEEIcE.

B. C. VAND'UZEN, OF CINCINNATI, OHIO.

MACHINE FOR HEADING- BOLTS.

Specification of Letters Patent No. 23,328, dated March 22, 1859.

T 0 all whom it may concern:

Be it known that I, B. C. VANDUZEN, of Cincinnati, in the county ofHamilton and State of Ohio, have invented a new and Improved lWIachinefor Heading Bolts, Rivets, Spikes, &c.; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawings, making a part of this specification,in which Figure 1, is a side sectional elevation of my improvement takenin the line w, m, Fig. 3. Fig. 2, is a front sectional view of same, m,m, Fig. 3 showing the plane of section. Fig. 3, is a horizontal sectionof same taken in the line 2 y, Fig. 1.

Similar letters of reference indicate corresponding parts in the severalfigures.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A, B, represent two bars placed at right angles with each other asplainly shown in Fig. 3, and forming the bed of the machine. To the partA, of the bed and near its center two uprights a, a, are attached, andbetween these uprights a toggle C, is placed, the upper lever 5, beingsuspended on a fulcrum pin 0, at the upper ends of the uprights, and thelower lever d, connected with the fulcrum pin 6, of a toggle D, formedof two levers f, g. The back lever f, of the toggle D, is jointed asshown at h, to a block E, which is fitted in a box 2', at the back endof the bar A, and which may be adjusted therein by means of a wedge j,and set screw 70. The front end of the front lever g, of the toggle D,is jointed, to a sliding bar Z, which is fitted between guides m, m, onthe bar A. To the front end of the sliding bar Z, a heading die F, isattached, and to the front side of the upper lever Z), of the toggle C,a rod G, is attached, said rod being screwed into or through the leverb, and secured by jam nuts 02., n. A fork 0, is formed at the outer endof the rod G, which fork receives a lever H, when said lever is raisedand determines the length of its upward movement, see Fig. l, and thelength of this movement may be varied as desired by adjusting the fork0, nearer to or farther from the lever b, which is done by loosening thejam nuts 71., a, and turning the rod G.

I, J, represent two clamps or dies which are placed on the bar A, at itsjunction with the bar B. These clamps or dies are provided each with ashank p. The shank p, of the die J, is fitted within a guide K, on barB, and is connected with a toggle L, the outer end of which is connectedby a joint g, to a block M, which is fitted in a box N, at the end ofbar B, and may be adjusted therein by a wedge 1", and set screws 8. Tothe toggle L, a lever O, is attached. The shank p, of the clamp or dieI, is fitted within a box P, at the end of the bar B, opposite to thatwhere the box N, is secured. The shank of the die I, is adjusted withinbox N, by means of a wedge 25, and set screw u. The face sides of thedies I, J, are each grooved longitudinally a certain distance as shownat a, so as to receive the blank and allow the dies to grasp it, anenlarged recess '0, being formed at the inner end of each groove a, sothat when the dies are closed or brought in contact with each other achamber will be formed to receive the heading die F, the head beingformed within said chamber.

0, is a block or gage attached to the upper surface of the bar A, and inline with the heading tool F.

The operation is as follows: The bars or rods of which the bolts, rivetsor spikes are formed are of the proper size, corresponding of course tothe desired diameter of the bolts, rivets or spikes, and the bars orrods are cut in proper lengths 01' blanks corresponding to the distancebetween the block or gage O, and the end of the heading die F, when thelatter is moved back its entire distance, which is done by shovingupward the lever I'I, until it enters the fork 0. hen the lever H, isthus shoved upward, the lever O, is also raised, the latter movementcausing the die J, to be drawn back from the die I. A blank 6, beingproperly heated is then placed between the dies, the inner end of theblank bearing against the heading die F, and the outer end against thegage O. The die J, is then shoved up against the die I, by depressingthe lever O, the blank 6, being thereby firmly clamped between the dies.The lever H, is then drawn down and the heading die F, being therebyforced into the recess 1), with a progressive power owing to the togglesand the inner end of the blank within the recess or chamber '2), iscompressed into a head, see Fig. 3. It will be seen that by adjustingthe fork 0, the length of the movement of the heading die F, may beregulated as desired and more or less space allowed in the chamber 0),so that the chamber may receive a sufficient portion of the blank toform a head of the required thickness, and it will also be seen, that byadjusting the block E, in the box 2', the heading die F, may be made topass a greater or less distance into the chamber 4), according to thethickness of head required. The clamps or dies I, J, also by adjustingthe wedges 1, It, may be regulated as to insure their perfect contactwith a requisite degree of pressure at all times.

I am aware that toggles have been used for operating punches, dies,&c.,' and arranged in various ways, and I therefore do not claim broadlythe use of toggles for operating the heading die F, and. die J, buthaving thus described my invention lVhat I claim as new and desire tosecure by Letters Patent, is,

1. The arrangement and combination of the adjustable spring fork rod Gr,lever I-I, upper lever (b) and heading die F, substantially as hereinshown and described, for the purpose of regulating the movements of thelever H, and die F, and controlling the size given to the head of thebolt.

2. I also claim in combination with the above parts the clamps or diesI, J, arranged as shown, so that by means of the wedges 7", z, and setscrews 8, u, the dies may be adjusted as and for the purpose specified.

BENJAMIN C. VANDUZEN.

Witnesses:

JAooB ANsI-IUTZ, GEORGE FRENCH.

